California Severe Extreme Heat Watch | Effective 08/22/2026 13:10

Headline: 
Extreme Heat Watch issued August 22 at 1:10PM PDT until August 28 at 8:00PM PDT by NWS San Diego CA
Event: 
Extreme Heat Watch
Urgency: 
Future
Effective: 
August 22, 2026 - 1:10pm
Expires: 
August 22, 2026 - 10:00pm
Description: 
* WHAT...For the Heat Advisory, temperatures up to 94. For the Extreme Heat Watch, dangerously hot conditions with temperatures up to 98 possible and moderate to major HeatRisk. * WHERE...San Bernardino County Mountains. * WHEN...For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Friday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Area Description: 
San Bernardino County Mountains
Forcast Office: 
NWS San Diego CA
Sender: 
w-nws.webmaster@noaa.gov